What percentage of them are about Hillary?
Congratulations! 
988 posts, so almost 1%
Edit: Meant 10% woops
Is this just a guess or did you actually find a way to calculate this?
Searched for all posts by you that have the word "Hillary", which is 33 full pages (30 posts each) + a page with 2 posts, so you're at 992 now.
Ah, okay. I guess the variables of "talking about Hillary without explicitly mentioning Hillary" and "tangentially mentioning her without it being focus of the post/just quoting a post with someone else mentioning her" would cancel each other out.
